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Finding the Fourth Proportional to 418,956.77, 578,220.15 and 235,214.75

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Solution

The fourth proportional to 418,956.77, 578,220.15 and 235,214.75 is: 324,629.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,956.77 : 578,220.15 = 235,214.75 : x
  2. Step 2: Convert to fraction form
    418,956.77/578,220.15 = 235,214.75/x
  3. Step 3: Cross multiply
    418,956.77x = 578,220.15 × 235,214.75
  4. Step 4: Simplify right side
    418,956.77x = 136,005,905,136.11
  5. Step 5: Solve for x
    x = 136,005,905,136.11/418,956.77
  6. Step 6: Final answer
    x = 324,629.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.